2005 BMW Z4 vs. 2008 Porsche 911
To start off, 2008 Porsche 911 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 BMW Z4. In addition, the cost of maintenance, including insurance, on 2005 BMW Z4 would be higher. At 3,600 cc (6 cylinders), 2008 Porsche 911 is equipped with a bigger engine. In terms of performance, 2008 Porsche 911 (444 HP @ 5700 RPM) has 303 more horse power than 2005 BMW Z4. (141 HP @ 6200 RPM) In normal driving conditions, 2008 Porsche 911 should accelerate faster than 2005 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2008 Porsche 911 weights approximately 265 kg more than 2005 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 2005 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2008 Porsche 911 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2008 Porsche 911 (620 Nm @ 3500 RPM) has 420 more torque (in Nm) than 2005 BMW Z4. (200 Nm @ 3600 RPM). This means 2008 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW Z4.
Compare all specifications:
| 2005 BMW Z4 | 2008 Porsche 911 | |
| Make | BMW | Porsche |
| Model | Z4 | 911 |
| Year Released | 2005 | 2008 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 1995 cc | 3600 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 141 HP | 444 HP |
| Engine RPM | 6200 RPM | 5700 RPM |
| Torque | 200 Nm | 620 Nm |
| Torque RPM | 3600 RPM | 3500 RPM |
| Engine Bore Size | 84 mm | 100 mm |
| Engine Stroke Size | 90 mm | 76.4 mm |
| Engine Compression Ratio | 10.5:1 | 9.4:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 220 km/hour | 307 km/hour |
| Acceleration 0-100mph | 8.2 seconds | 4.2 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1325 kg | 1590 kg |
| Vehicle Length | 4100 mm | 4440 mm |
| Vehicle Width | 1790 mm | 1840 mm |
| Vehicle Height | 1310 mm | 1300 mm |
| Wheelbase Size | 2500 mm | 2360 mm |
| Fuel Consumption Overall | 7.7 L/100km | 13.3 L/100km |
| Fuel Tank Capacity | 55 L | 64 L |
